The angle of incidence can vary between zero and
A) 3 $\pi$/2 radians.
B) $\pi$/2 radians.
C) 2 $\pi$ radians.
D) 1 radian.
E) $\pi$ radians.

Question

The angle of incidence can vary between zero and
A) 3 $\pi$/2 radians.
B) $\pi$/2 radians.
C) 2 $\pi$ radians.
D) 1 radian.
E)  $\pi$ radians.

Quizplus · Accepted Answer

The angle of incidence refers to the angle at which a ray of light or radiation strikes a surface relative to the normal (perpendicular) to the surface. It can vary from 0 (directly along the normal) to $\pi/2$ radians (parallel to the surface), but not beyond, as angles beyond $\pi/2$ would imply the ray is coming from within the material.

The Angle of Incidence Can Vary Between Zero and A) π\piπ

The Angle of Incidence Can Vary Between Zero and
A) $\pi$